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Lars Hammarstrand

10 accepted papers

2025

ProHOC: Probabilistic Hierarchical Out-of-Distribution Classification via Multi-Depth Networks

CVPR 2025poster

Out-of-distribution (OOD) detection in deep learning has traditionally been framed as a binary task, where samples are either classified as belonging to the known classes or marked as OOD, with little attention given to the semantic relationships between OOD samples and the in-distribution (ID) clas…

2024

Localization Is All You Evaluate: Data Leakage in Online Mapping Datasets and How to Fix It

CVPR 2024poster

The task of online mapping is to predict a local map using current sensor observations e.g. from lidar and camera without relying on a pre-built map. State-of-the-art methods are based on supervised learning and are trained predominantly using two datasets: nuScenes and Argoverse 2. However these da…

2024

ProSub: Probabilistic Open-Set Semi-Supervised Learning with Subspace-Based Out-of-Distribution Detection

ECCV 2024poster

"In open-set semi-supervised learning (OSSL), we consider unlabeled datasets that may contain unknown classes. Existing OSSL methods often use the softmax confidence for classifying data as in-distribution (ID) or out-of-distribution (OOD). Additionally, many works for OSSL rely on ad-hoc thresholds…

2021

Back to the Feature: Learning Robust Camera Localization From Pixels To Pose

CVPR 2021poster

Camera pose estimation in known scenes is a 3D geometry task recently tackled by multiple learning algorithms. Many regress precise geometric quantities, like poses or 3D points, from an input image. This either fails to generalize to new viewpoints or ties the model parameters to a specific scene.…

Cited by 301PDFcodeScholar
2019

A Cross-Season Correspondence Dataset for Robust Semantic Segmentation

CVPR 2019poster

In this paper, we present a method to utilize 2D-2D point matches between images taken during different image conditions to train a convolutional neural network for semantic segmentation. Enforcing label consistency across the matches makes the final segmentation algorithm robust to seasonal changes…

Cited by 104PDFcodeScholar
2019

Fine-Grained Segmentation Networks: Self-Supervised Segmentation for Improved Long-Term Visual Localization

ICCV 2019poster

Long-term visual localization is the problem of estimating the camera pose of a given query image in a scene whose appearance changes over time. It is an important problem in practice that is, for example, encountered in autonomous driving. In order to gain robustness to such changes, long-term loca…

Cited by 88PDFcodeScholar
2018

Benchmarking 6DOF Outdoor Visual Localization in Changing Conditions

CVPR 2018poster

Visual localization enables autonomous vehicles to navigate in their surroundings and augmented reality applications to link virtual to real worlds. Practical visual localization approaches need to be robust to a wide variety of viewing condition, including day-night changes, as well as weather and…

Cited by 780SourcePDFScholar
2018

Semantic Match Consistency for Long-Term Visual Localization

ECCV 2018poster

Robust and accurate visual localization across large appearance variations due to changes in time of day, seasons, or changes of the environment is a challenging problem which is of importance to application areas such as navigation of autonomous robots. Traditional feature-based methods often strug…

Cited by 166SourcePDFScholar